my dad and i built two electric basses this year and we were thinking about trying to build an electric standup. if anyone has any suggestions on pickups, measurements, or anything like that let me know. -thanks, eric
Try the search function using the keywords "building EUB". Your question has been asked many times and the answers you seek will probably be found there. BTW - an Upright Electric (stick) Bass is not a Double Bass - atleast not around here.
building a double bass 
